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Earth of fire

Actualité volcanique, Articles de fond sur étude de volcan, tectonique, récits et photos de voyage

Publié le par Bernard Duyck
Publié dans : #volcanic activity

The PVMBG recorded on March 14 at Anak Krakatau 4 earthquakes of eruption, a superficial and 2 deep volcanic earthquakes , as well as a continuous tremor of amplitude 1-5 mm.

2019.03.14 17h16 loc Krakatau

An orange VONA was released on March 14th following an
eruption that occurred at 17:16 local, accompanied by a plume of unreferenced height due to cloud cover. The seismogram of the eruption shows an amplitude of 52 mm for 32 seconds.

 

Source: PVMBG, Magma Indonesia, VAAC Darwin

Anak Krakatau - seismogram of 14.03.2019, with the eruption at the top - Doc.Magma Indonesia

Anak Krakatau - seismogram of 14.03.2019, with the eruption at the top - Doc.Magma Indonesia

The phreatic activity continues in Mayon.

At the three eruptions reported on March 13, were added three more episodes: a total of six phreatic eruptions so, respectively at 9:06, 21:39, 21:46, 21:55, 22:00, and 22:59, accompanied by ash plumes at 200, 500 , 200, 500, 700, and 300 meters above the top respectively.

At the seismicity level, 6 volcanic earthquakes and 3 rockfall episodes were recorded.

Between eruptions, a plume of steam was visible, crawling on the slopes first, before heading to a west sector. Sulfur dioxide emissions were measured at 763 tonnes / day, and noted nighttime glow.

On March 14, at 18:55, a phreatic episode was accompanied by a plume of ash 500 meters above the summit, then drifting south-west.

Two volcanic earthquakes and five rock falls were recorded; meanwhile steam was emitted.

The alert level remains at 2 / moderate level of instability.

 

Source: Phivolcs

Mayon - plume of the phreatic eruption of March 7, 2019 - photo Phivolcs

Mayon - plume of the phreatic eruption of March 7, 2019 - photo Phivolcs

At the Popocatépetl, there is an explosion on March 14 at 14:30; it was accompanied by an ash plume 5,000 meters high and the ejection of incandescent fragments at a distance of 2 km.

This activity remains in the context of the destruction of the # 82 dome and amarillo fase 2 alert.

 

Source; CENAPRED

Popocatépetl - explosion of 14.03.2019 / 14h32 - webcam Altzomoni / Cenapred

Popocatépetl - explosion of 14.03.2019 / 14h32 - webcam Altzomoni / Cenapred

VAAC Darwin reports ash emissions on Barren Island, and maintains an Orange Aviation Code, signs of continued activity.

Barren island - Volcanic ash advisory 14.03.2019 - Doc. VAAC Darwin IDY65300

Barren island - Volcanic ash advisory 14.03.2019 - Doc. VAAC Darwin IDY65300

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